Trolley.



A. B. UPHAM.

TROLLEY.

APPLICATION FILED MAR. 31, 1915. RENEWED MAY 2,1918.

Patented Feb. 11,1919.

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mfiaesses- AIR ElJill/IAS B. UPHAJVE,--0E MALDEN, MASSACHUSETTS,ASSIGNOR, BY ASSIGN- MENTS, 1 T0 EDWIN sHIvEL or MECLROSE,MASSACHUSETTS;

'fRbLLEY.

s ecification of Letters Patent."

Patented Feb; 11, 1919;

setts; havednvehted certain; new andueefuI Improvements in Trolleys, ofWh1eh thefbllowing 1s a" full; clear; and exa'ct speolfication.

two trolle wiresg is especially adapted Ohe objection found to exist inconnection with all such fwd-Wiretrolley" systems is thegreatly addedCost 61. the twbmclclitiohal trblley wires when the traiflie is suchthat) cars passing ea-ch other "aresuhjected t'othe cle'l ey and hbthef'of frequent 5 removal ahd repl acement of their ffi'bl le'ys: Noe alb 'eis' the expense a heavybuiderfto"the sto'ekhold ers of the line; butthenun'ibeif of tihfley Wires overhead in the streets; is" often 0hjected tb' hythefesideritsf inventidn h'as-fbf 1t's o'b'g'ct*the' e nabling of ears; tb passeaeh'nthewifi opposite directions a' system--emplbyifig" hilt" twb trolley wires; and" 'yet entirel' without'delayorb otllerf Te this-'end=1?'1iave clevi's'edhnean's whereby each car'mnkeepfoh'e of" its ti-bll ywheels in cont'aet 'with one of thewvires;'WhllQ each other trolley wheel is svl tififf ar'efiouglt away" from itsWire136""2A70id 'th, sin'lil arly removed trolley of theoth'er car; andwhere hy" each" removed t'i o'lly is automatically contiol'led in its%return to its -f( hnf1e"1" Wire y its mremovewtroHeys In'carrying myinven'tion" in'tee'ffe'ct I fiffally disbverecl; after making severalquite cdfil'plicsited devices for "the purpose, that a simple hill ofsome non conducting'matriah lbosel'i' attached at itsends" t0 "the two'*tiolley poles of w car; would n ahlea withdrawn trolley to evyingaccilftte'ly hack intoengaigemem 1 with" its wlre. V

'Referri'n wo the drawings" formin -i part of thisspecifieatiomFigure 1is'w perspec tive viewo'f atLd'oplbletrolley embodying my improvements:Fig. 2 is 2m en'd view of two trolley Wires showing" two tiolle-y cars1n the o fpassingeach' other; with one t1'r01- ley ofeaeh'car'withdrawn; Fig. Bellows two trolley Wheels andportiofis'oftlieir"tr01ley When" two approaching" cars' some abr'eat;

ing off their respective trolley, and not switch it on again until afterthe trolleys have been returned to the wires. The cars being under usualheadway, they will drift past each other until their trolleys can nolonger meet, and then, by releasing their ropes, the two removedtrolleys swing back up into exact engagement with their wires.

Of course, it is necessary to hav the trolley wires putup apredetermined distance apart, and to have the bars 10 of the trolleysmade of uniform lengths suitably proportioned to bring the grooves ofthe wheels 3, l into correspondence with the trolley wires; but when somade, th return of the removed trolley wheels is always certain,

Whenever it is desired to remove both trolley wheels from their wires,the rope 20 is pulled down upon until not only has the trolley wheel 3been lowered, but, through the pull imparted through the bar 10, thewheel 4 is also brought down. By proper manipulation of the rope 20, thejoined trolleys can be swung to either side of the car to other wires,or fastened down.

For returning the trolleys to the wires, the rope :20 is pulled upon andthe trolleys, with the wheel 3 vertically beneath the wheel 4, swung toa point beneath the wire 2. Therope is then gradually released until thewheel 4 engages its wire 2, and then more quickly released until thewheel 3 has swung up into engagement with its wire 1.

It is, therefore, evident that this trolley is of considerableimportance even for a line running but a single car and hence notrequiring the car-passing function, inasmuch as it reduces the task ofapplying the two wheels to their wires practically to that ofmanipulating but a single wheel.

The reason for not coupling the bar directly to the trolley pole 5, butallowin their separation, is that when a car is turne at an obliqueangle relative to its overhead trolley wires, the separation of the twowheels is considerably greater than distance between the wires. Hence,by allowing the rope 16 to slip through its eye or pulley 17, the wheelscan separate as far as is needed; but as soon as the ropes 20 or 22 arepulled upon, the slack is taken up and the bar 10 put into condition forits desired functions. It is found that the slight obliquity of thetrolley poles caused by the ordinary divergence of the passing cars isinsufficient to make any appreciable difference in the distance betweenthe wheels 3, 4. p

.It should be noted that whenthe trolley pole 5 is swung down andlaterally to a point substantially below the pole 6, the upward pressureof'the pole 5, acting through the bar 10, is added to the normal upwardpressure of the ole 6, and thereby more strongly insures t 1e engagementof the trolley wheel 4 with its wire What I claim is:

1. In a trolley system provided with two trolley wires,a currentcollector comprising two current collecting devices each normally 111contact with one of said wlres, and means operative at will from the carcarrying said current collector for withdrawing one of said devices to asubstantial distance from its wire and for returning it thereto, thecontact of the other device with its wire not being disturbed, the saidwithdrawal of the device from its wire being sufllcient to permitanother current collecting device to pass means operative at will forwithdrawing one of said devices away from its wire to ward a pointbeneath the otherdevice for a distance more than half that between thewires, and for returning it thereto, the contact of the other devicewith its wire not being disturbed, and the unremoved device being anagent in the return of the with drawn device to its wire. 7

3. In a trolley system providedwith two trolley wires, a currentcollector compris ing two current collecting devices each embracing atrolley wheel pressed upward into engagement with one of the wires, andmeans operative at will from the car carrying the current collector formoving one of said devices awayfromits wire toward the other device fora distance more than half that between the wires, and for. returning itthereto, said removing. and returning means acting both verticallyandlaterally, and the removed device being. controlled through theunremoved device. 7

4. In a trolley system provided with two trolley wires, a currentcollector comprising two grooved trolley wheels, a trolley pole pressingone ofsaid wheels up into engagement with one of said wires, aninflexible upwardly pressedmember yieldingly pressing the other of saidwheels into engagement with its trolley wire, and means including a ropeconnected with said member and pole for swinging said member downwardand toward said pole to a distancermore than half that between saidwires without disturbing the engagement with its wire of said polestrolley wheel, and for swingingsaid member away from said pole andupward to present its trolleywheel accurately into engagement with thelatterstrolley wire.

5, In a trolley-system provided with two trolley wires, a currentcollector comprising two upwardly pressed poles each carrying anunder-running trolley wheel, a bar loosely attached at its ends to saidpoles, and a rope connected with one of said poles, the rope enablingone of the trolley wheels to be withdrawn from its wire, and the barcausing the reengagement of the same with its wire upon the release ofthe rope.

6. In a trolley system provided with two trolley wires, a currentcollector comprising two upwardly pressed poles, each carrying anunder-running trolley wheel, a non-conducting bar loosely attached atits ends to said poles, and means for swinging one of said polesdownward,said bar causing the reengagement of the removed trolley wheelwith its wire when its pole is swung back.

7. In a trolley system provided with two trolley wires, a currentcollector comprising two upwardly pressed oles each carrying anunder-running trolley wheel, a bar attached loosely at one end to one ofsaid poles, the other pole having an eye, and a rope attached to thefree end of said bar and passing through said eye to an operative point.

8. In a trolley system provided with two trolley wires, a currentcollector comprising two upwardly pressed poles each carrying anunder-running trolley wheel, a bar attached loosely at its ends to saidpoles, a pulley held by the car supplied with the current collector, anda rope passing from one of said poles down about said pulley and thenceforward into the reach of the m0- torlnan.

9. In a trolley system provided with two trolley wires, a currentcollector comprising two upwardly pressed poles each carry- 1ng anunder-running trolley wheel, a bar loosely attached at one end to one ofsaid poles, the other pole having an eye, a rope attached to the freeend of said bar and pass ing through said eye, and two ropes connectedwith the first-named rope, one passing into the reach of the motorman,and the other to the reach of the conductor.

10. In a trolley system provided with two trolley wires, a currentcollector comprising two current collecting devices, an upwardly pressedpole holding one of said devices into engagement with one of said wires,means for pressing .the other device into engagement with its wire, aninflexible member holding said devices apart for a distancecorresponding to that between the wires, and a rope connected with oneof said devices for its withdrawal.

In testimony that I claim the foregoing invention, I have hereunto setmy hand this 27 day of February, 1915.

ARTEMAS B. UPHAM.

Witnesses:

EDWIN SHIVELL, J osnrn W. DOWNS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, 11.0.

